A14223 | $Spy Detected!$

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题目描述

You are given an array $a$ consisting of $n$ ( $n \ge 3$ ) positive integers. It is known that in this array, all the numbers except one are the same (for example, in the array $[4, 11, 4, 4]$ all numbers except one are equal to $4$ ). Print the index of the element that does not equal others. The numbers in the array are numbered from one.

The first line contains a single integer $t$ ( $1 \le t \le 100$ ). Then $t$ test cases follow. The first line of each test case contains a single integer $n$ ( $3 \le n \le 100$ ) — the length of the array $a$ . The second line of each test case contains $n$ integers $a_1, a_2, \ldots, a_n$ ( $1 \le a_i \le 100$ ). It is guaranteed that all the numbers except one in the $a$ array are the same.

For each test case, output a single integer — the index of the element that is not equal to others.

输入 #1

4
4
11 13 11 11
5
1 4 4 4 4
10
3 3 3 3 10 3 3 3 3 3
3
20 20 10

输出 #1

C++ 编辑器

输入

输出